EP0734012A3 - Signal discrimination circuit - Google Patents

Signal discrimination circuit Download PDF

Info

Publication number
EP0734012A3
EP0734012A3 EP95109657A EP95109657A EP0734012A3 EP 0734012 A3 EP0734012 A3 EP 0734012A3 EP 95109657 A EP95109657 A EP 95109657A EP 95109657 A EP95109657 A EP 95109657A EP 0734012 A3 EP0734012 A3 EP 0734012A3
Authority
EP
European Patent Office
Prior art keywords
signal
tone
input
discrimination circuit
determines
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95109657A
Other languages
German (de)
French (fr)
Other versions
EP0734012B1 (en
EP0734012A2 (en
Inventor
Yukimasa c/o Mitsubishi Denki K.K. Sugino
Yushi C/O Mitsubishi Denki K.K. Naito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP0734012A2 publication Critical patent/EP0734012A2/en
Publication of EP0734012A3 publication Critical patent/EP0734012A3/en
Application granted granted Critical
Publication of EP0734012B1 publication Critical patent/EP0734012B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

An operation of a discriminated result output unit (53) which determines on the basis of a judged result (S5) based on an interblock electric power ratio of an input signal (S1) and a judged result based on a zero-cross number (S6) whether the input signal (S1) is a voice signal or a voiceband data signal is controlled by an output (S10) of a tone detection unit (52) which analyzes the input signal (S1) by a spectrum analyzer to calculate sub-band powers and which determines on the basis of the sub-band powers the presence or absence of the tone signal, whereby an output (S11) of a discriminated result output unit (53) can be set to the value "0" (voice signal) when the tone signal is input. The signal discrimination circuit can reliably classify various types of signals including tone signal into voice signal or voiceband data signal with a high accuracy.
EP95109657A 1995-03-24 1995-06-21 Signal discrimination circuit Expired - Lifetime EP0734012B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP66268/95 1995-03-24
JP6626895 1995-03-24
JP07066268A JP3094832B2 (en) 1995-03-24 1995-03-24 Signal discriminator

Publications (3)

Publication Number Publication Date
EP0734012A2 EP0734012A2 (en) 1996-09-25
EP0734012A3 true EP0734012A3 (en) 1998-08-12
EP0734012B1 EP0734012B1 (en) 2002-08-28

Family

ID=13310937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109657A Expired - Lifetime EP0734012B1 (en) 1995-03-24 1995-06-21 Signal discrimination circuit

Country Status (5)

Country Link
US (1) US5694517A (en)
EP (1) EP0734012B1 (en)
JP (1) JP3094832B2 (en)
DE (1) DE69527939T2 (en)
IL (1) IL114037A (en)

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JP3252782B2 (en) 1998-01-13 2002-02-04 日本電気株式会社 Voice encoding / decoding device for modem signal
US6226356B1 (en) * 1998-06-12 2001-05-01 Legerity Inc. Method and apparatus for power regulation of digital data transmission
JP3586123B2 (en) 1998-12-07 2004-11-10 三菱電機株式会社 Channel check test system
DE19908772A1 (en) * 1999-02-19 2000-08-24 Deutsche Telekom Ag Method for recognition of connection interrupt of analogue connection initiated during conversation with voice controlled system by transmitting signal on recognition of engaged signal to voice controlled interactive system
US6549587B1 (en) 1999-09-20 2003-04-15 Broadcom Corporation Voice and data exchange over a packet based network with timing recovery
US6765931B1 (en) * 1999-04-13 2004-07-20 Broadcom Corporation Gateway with voice
US6882711B1 (en) * 1999-09-20 2005-04-19 Broadcom Corporation Packet based network exchange with rate synchronization
US7423983B1 (en) 1999-09-20 2008-09-09 Broadcom Corporation Voice and data exchange over a packet based network
US7161931B1 (en) 1999-09-20 2007-01-09 Broadcom Corporation Voice and data exchange over a packet based network
US6757367B1 (en) * 1999-09-20 2004-06-29 Broadcom Corporation Packet based network exchange with rate synchronization
US7924752B2 (en) 1999-09-20 2011-04-12 Broadcom Corporation Voice and data exchange over a packet based network with AGC
US7920697B2 (en) * 1999-12-09 2011-04-05 Broadcom Corp. Interaction between echo canceller and packet voice processing
EP1238489B1 (en) 1999-12-13 2008-03-05 Broadcom Corporation Voice gateway with downstream voice synchronization
US6718297B1 (en) 2000-02-15 2004-04-06 The Boeing Company Apparatus and method for discriminating between voice and data by using a frequency estimate representing both a central frequency and an energy of an input signal
KR20020012376A (en) * 2000-08-07 2002-02-16 임영식 Detection Method of Tone Signal Using Ratio of Energy on Frequency Spectrum
US7003093B2 (en) 2000-09-08 2006-02-21 Intel Corporation Tone detection for integrated telecommunications processing
US6738358B2 (en) 2000-09-09 2004-05-18 Intel Corporation Network echo canceller for integrated telecommunications processing
US20020116186A1 (en) * 2000-09-09 2002-08-22 Adam Strauss Voice activity detector for integrated telecommunications processing
US6868116B2 (en) * 2001-02-16 2005-03-15 Nortel Networks Limited Universal telephony tones detector
US6597161B2 (en) * 2001-11-26 2003-07-22 Tropic Networks Inc. Method and apparatus for spectrum analysis with variable detection latency and multiple layer coherent integrations
GB2407952B (en) * 2003-11-07 2006-11-29 Psytechnics Ltd Quality assessment tool
US8187318B2 (en) * 2005-08-31 2012-05-29 Advanced Bio Prosthetic Surfaces, Ltd. Covered stent with proximal and distal attachment, delivery catheter, and method of making same
WO2007083269A1 (en) * 2006-01-17 2007-07-26 Koninklijke Philips Electronics N.V. Detection of the presence of television signals embedded in noise using cyclostationary toolbox
JP4757158B2 (en) * 2006-09-20 2011-08-24 富士通株式会社 Sound signal processing method, sound signal processing apparatus, and computer program
WO2009130388A1 (en) 2008-04-25 2009-10-29 Nokia Corporation Calibrating multiple microphones
US8275136B2 (en) 2008-04-25 2012-09-25 Nokia Corporation Electronic device speech enhancement
US8244528B2 (en) 2008-04-25 2012-08-14 Nokia Corporation Method and apparatus for voice activity determination
WO2010007468A1 (en) * 2008-07-16 2010-01-21 Freescale Semiconductor, Inc. Method and apparatus for detecting one or more predetermined tones transmitted over a communication network
US8407044B2 (en) * 2008-10-30 2013-03-26 Telefonaktiebolaget Lm Ericsson (Publ) Telephony content signal discrimination
JP6090371B2 (en) * 2015-06-17 2017-03-08 ヤマハ株式会社 Audio signal identification device and program

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0480129A2 (en) * 1990-10-09 1992-04-15 Mitsubishi Denki Kabushiki Kaisha Voice/voice band data discrimination apparatus

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US4980917A (en) * 1987-11-18 1990-12-25 Emerson & Stern Associates, Inc. Method and apparatus for determining articulatory parameters from speech data
US4979211A (en) * 1988-11-16 1990-12-18 At&T Bell Laboratories Classifier for high speed voiceband digital data modem signals
US4979214A (en) * 1989-05-15 1990-12-18 Dialogic Corporation Method and apparatus for identifying speech in telephone signals
JPH07113840B2 (en) * 1989-06-29 1995-12-06 三菱電機株式会社 Voice detector
EP0435458B1 (en) * 1989-11-28 1995-02-01 Nec Corporation Speech/voiceband data discriminator
US5164980A (en) * 1990-02-21 1992-11-17 Alkanox Corporation Video telephone system
JP2609737B2 (en) * 1990-02-28 1997-05-14 三菱電機株式会社 Voice / data discriminator
US5023906A (en) * 1990-04-24 1991-06-11 The Telephone Connection Method for monitoring telephone call progress
US5325425A (en) * 1990-04-24 1994-06-28 The Telephone Connection Method for monitoring telephone call progress
JP2750206B2 (en) * 1990-04-27 1998-05-13 キヤノン株式会社 Data communication device
JPH0622073A (en) * 1992-06-30 1994-01-28 Fuji Xerox Co Ltd Facsimile equipment with voice signal identifying function
JPH07123242B2 (en) * 1993-07-06 1995-12-25 日本電気株式会社 Audio signal decoding device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0480129A2 (en) * 1990-10-09 1992-04-15 Mitsubishi Denki Kabushiki Kaisha Voice/voice band data discrimination apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS", 19 June 1983, IEEE COMMUNICATIONS SOCIETY, BOSTON, XP002068265, 17983 *
CASALE S ET AL: "A DSP IMPLEMENTED SPEECH/VOICEBAND DATA DISCRIMINATOR", 28 November 1988, COMMUNICATIONS FOR THE INFORMATION AGE, HOLLYWOOD, NOV. 28 - DEC. 1, 1988, VOL. VOL. 3, NR. -, PAGE(S) 1419 - 1427, INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, XP000042485 *

Also Published As

Publication number Publication date
IL114037A (en) 1998-08-16
JP3094832B2 (en) 2000-10-03
JPH08265457A (en) 1996-10-11
DE69527939T2 (en) 2003-05-28
DE69527939D1 (en) 2002-10-02
EP0734012B1 (en) 2002-08-28
US5694517A (en) 1997-12-02
IL114037A0 (en) 1995-10-31
EP0734012A2 (en) 1996-09-25

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